Independent clasp-brake for trailer-trucks.



F. E. scHwENTEER. INDEPENDENT cLAsP BRAKE Fox TRANEN TNucNs. lAPPLICATlON flLED NOV. ll; 1,914. l ,270,878. Patented July 2,1918.

NN Hlllllllllhmdul Wel @ENNA lful vmprovement .inV

'UNITED sTATEs PATENT onirica,

i `listeners E. scriWENTLEn, or sT. LOUIS, MISSOURI, AssIeNon. To THEAMniticAN l BRAKE COMPANY, Ons'r. LOUIs, MISSOURI, A CORPORATION orMISSOURI.

INDEPENDENT CLASP-BRAK FOR TRAIlllililll-TR'UGKS.l

Specification of Letters Patent.

Patented July Application led November 11,` 1914. Serial No. 871,487.

To all 'whom it may concern.'

Be it known that I, FRANCIS E. ScHwENT- LER, a citizen of theUnitedStates, anda resident of St. Louis, souri have'invented a certainnew and use- Independent Clasp- Brakes for Trailer-Trucks, of which imytruck may a side elevation ofA Improvement the following is aspecification.

This invention relates to brake rigging for locomotiveshaving radialtrailer trucks,

has for its object to provide a self-contained clasp type of brake forthe trailer truck Wheels, and operated by an independent brake cylinder,whereby the full equalized pressure for thebrakes on the trailer withoutthe use of mechanical connections, with the equalized system of drlverbrakes.

d and may be readily applied to the various designs of trailer trucklocomotives without interfering the engine frame. v

AIn the laccompanying drawings:l Figure l a brake design embodye trailertruck of a locomotive, the main and trailerl truck frames beingindicated in dotted lines; and FigfQ, a planof same.

According -to the construction shown in the drawings,

1" i trated in connection with the usual form of ytrailer truck-locomotive having a main, as

` -Inain frame, and carrying journal the trailer truck whee1s,-3. `Theusual 'form yd frame, 1, with drivingwheels, 2,' a radial trailer truck'frame, 4, pivoted at 5 to the boxes for of equalized driver brake systemmay be employed for applying the'vbrakes tothe driv- -fb Foractuatingthe brakes on the trailer truck,brake hea'ds andvshoes, Sa andS4', are appliedto bothv sides of the trailing wheels,

:being plvotally supported On the respective Jaw hanger levers, 19and20, pivoted onxsuitithe trailer truck.`

`which are connected toevers,.17 and..21,

18, 1113011 both sides-of `and 2, the equalizing truck levers, 17 and 21sis 1 are attached at their outside ends to the in the State of Misbereadily obtained -at all times he construction is thus very muchsimpliwith the members of,

' swinging my improvement is illustives.

trailing `frame, and actuated by main rod, 6, connected to the lower armof the vertical. brake cylinder lever, lever is pivotally v18, are

The inner ends of said levers, 21,

mounted on brackets, 8, supported on the 4 main engine frame, and isconnected at its upper .end to the piston of the brake cylinder, C,also'mounted on the main frame. he jawv end of the main pull rod, 6, ispreferably guided by lar hanger, H, pivotally connected at the lower endto the rod, 6, and comprising 11pwardly and laterally diverging barspivotally attached to the main .frame at suitable points separated fromeach other a sufficient distance to prevent the hanger from midd e pinof the equalizer, 10, which should be located and maintained as nearly Ias practicable coincident-with the truck centhe equalizer, 10,

ter pin, 5, and restrains `when the brakes agalnst lateral movement andprevents usual brake cylinder'of the equalizer driver this way allcomplicated mechanical," connections between the brake levers of thejdriver brake system and those of the'trailer 'truck are dispensed withand the design may be readily applied to any of the various forms oftrailer truck lo omoinvention,

.Having` now l described my secure by what I cla' as new and desire toLetters Patentis: I In a brake rigging for locomotives with trailertrucks, the combination with t e main frame and the trailer truck frame,brake shoes applied to both sides of the trailer truck wheels, two setsof truck levers and pull .rod connections, one on each side laterally.This serves to guide the t means of the triangu-` tions with the trucklevers,

,the main frame,

of the truck, for actuating said brake shoes, a cross equalizer locatedsubstantially at the pivot of the trailer truck frame and hav-v ing pullrod connections With the truck levers, and a brake cylinder mounted onvthe main frame land having` connections for actuating said crossequalizer.

2. In a brake rigging for locomotives with trailer trucks, thecombination with the main frame, and the trailer .truck frame, of brakeshoes applied to both sides of the trailer-truck Y Wheels,

two sets of truck levers and `pull rod connections,

actuating said brake shoes, a cross equalizer located substantially atthe pivot of the trailfer truck frame and having pull rod connecmeansfor restraining; said equalizer Vagainst lateral movement, and a brakecylinder mounted on the main frame and havmg'f connectlons for actuatingsaid cross equalizer.`

3. In a brake rigging for locomotives with trailer trucks, thecombination with and the trailer truck frame,-

of lorake shoes applied to both sides of the trailer truck Wheels, tWosets of equalizer truck levers and pull rods, one on each side one oneach lside of the'truck, for

'of the truck, for actuating said lorakevshoes,

a cross equalizer having pull rod `connections with one pair of trucklevers, the other pair of truck levers having fixed fulcrums,

a main pull rod connectedl to said vcross n equalizer,l and a guidemounted on the main lateral movement oi;x

frame for preventing said main pull rod.

4.- In a brake rigging` n locomotives' with trailer trucks, thecombination with the main frame, and the trailer truck frame; of

`brake shoes applied to both sides of the trailer truck wheels, twosetsof equalizer truck levers Vand pull rods, one .on each side' of thetruck, for actuating; said brake shoes,

a cross equalizer having pull rod connec- 1 tions With one pair of trucklevers, the other pair of truck levers having iXed fulcrums,

a mainpull rod connected to saidcross equalizer, mounted and atriangular guidehanger connected to said main pull roch FRANCIS E.soHWENTLER. Witnesses: 4 A

F. G. GUI-worn, OTTO J .yl PArKE.

on the main frame andpivotally

